Install over Ubuntu 10.4

Hi,
I work with Ubuntu 10.4 bcouse is LTS version.
After download and uncompress the file zdesktop_2_0_1_b10659_linux_i686.tgz, enter to the directory and write
sudo ./install.pl
When question "Would you like to continue to install data files for user: root?", I response "No".
I open a terminal and write
/opt/zimbra/zdesktop/linux/user-install.pl
VEry good, install the profiles and the icon in my desktop. Press Enter to open Zimbra Destop and configure the email count.
When I try to create a new calendar, send me the message "Subfolders under USER_ROOT are not allowed.", buy I am not root.
Can help me?